Plastics Network

The flexibility and extensibility of a crosslinked epoxy network are determined by the available glassy-state free volume. If the free volume is insufficient to allow network segmental extensibility via rotational isomeric changes then the brittle mechanical response of the epoxy glass is not controlled by the network structure but rather by macroscopic defects such as microvoids. For epoxies with sufficient free volume that allows plastic network deformation the mechanical response is controlled by the network structure. 

Maragakis, R, Karplus, M. Large amplitude conformational change in proteins explored with a plastic network model adenylate kinase, J. Mol. Biol. 2005,352, 807. 

Plastics Network Market-oriented supplier and service firm, http //www.plasticsnet.com... 

The Plastics Network from Commerx, Inc. (www. plasticsnet.com) features a Sourcing Center that allows users to search for specific plastics related products and services. The site, which provides secure online ordering, enables users to compare vendors of similar products and services to get the best value. 

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AlphaGary DuPont Exxon M.A. Polymers Montell NA Network Polymers A. Schulman Solutia Solvay Engineered Polymers Teknor Apex Union Carbide Vi-Chem AlphaGary Equistar M.A. Polymers Montell NA Network Polymers A. Schulman Solutia Solvay Engineered Polymers Teknor Apex Vi-Chem Wash. Penn DuPont Eastman DuPont Ticona Creanova Elf Atochem N.A. EMS Etna Eirestone Synthetic Rubber Network Polymers A. Schulman Shell AlphaGary Dow Plastics Network Polymers Shell Teknor Apex Creanova LNP Creanova LNP... 

Crazing is also called hairline craze. They can be fine, thin, tiny type cracks that may extend in an unreinforced or reinforced plastic network... 

Rechargeable battery designers initially used linear-homo-polymers of ethylene oxide (EO). The initial design of polymer-ethylene-oxide (PEO) batteries demonstrated good performance over the temperature range of 60° to 125°C. At these temperatures, an ionic conductivity of 0.001 S/cm was observed for fully amorphous solid polymer electrolytes. The use of these plasticized networks could yield ionic conductivities better than 0.001 S/cm even at room temperature (27°C). 

The case with which the plasticized networks arc ptoducabk and the prospect of using materials with higher spontaneous polarization make them aerioua candidates for highly birefringent transpaienl piezoelectrics. 

In the latter two cases, the endlock phase may extend as a continuous plastic network throughout the rubber matrix. This tends to be the case when the endblock phase concentration is above about 20%w. In this situation, as the sample is stretched, the initial stress is borne by the plastic network, and the stress-strain properties are greatly affected as discussed below. The existence of these different morphol-... 

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